openssl: fix CVE-2023-5678 Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow

(From OE-Core rev: 6cd4c30a2811420159d72c2f0a9430f1f0294686)

Signed-off-by: Vivek Kumbhar <vkumbhar@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 181 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssl/openssl/CVE-2023-5678.patch b/meta/recipes-connectivity/openssl/openssl/CVE-2023-5678.patch
new file mode 100644
index 0000000000..796a4f8be9
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/CVE-2023-5678.patch
@@ -0,0 +1,180 @@
+From db925ae2e65d0d925adef429afc37f75bd1c2017 Mon Sep 17 00:00:00 2001
+From: Richard Levitte <levitte@openssl.org>
+Date: Fri, 20 Oct 2023 09:18:19 +0200
+Subject: [PATCH] Make DH_check_pub_key() and DH_generate_key() safer yet
+
+We already check for an excessively large P in DH_generate_key(), but not in
+DH_check_pub_key(), and none of them check for an excessively large Q.
+
+This change adds all the missing excessive size checks of P and Q.
+
+It's to be noted that behaviours surrounding excessively sized P and Q
+differ.  DH_check() raises an error on the excessively sized P, but only
+sets a flag for the excessively sized Q.  This behaviour is mimicked in
+DH_check_pub_key().
+
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+Reviewed-by: Matt Caswell <matt@openssl.org>
+Reviewed-by: Hugo Landau <hlandau@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/22518)
+
+(cherry picked from commit ddeb4b6c6d527e54ce9a99cba785c0f7776e54b6)
+
+Upstream-Status: Backport [https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=db925ae2e65d0d925adef429afc37f75bd1c2017]
+CVE: CVE-2023-5678
+Signed-off-by: Vivek Kumbhar <vkumbhar@mvista.com>
+---
+ crypto/dh/dh_check.c    | 12 ++++++++++++
+ crypto/dh/dh_err.c      |  3 ++-
+ crypto/dh/dh_key.c      | 12 ++++++++++++
+ crypto/err/openssl.txt  |  1 +
+ include/crypto/dherr.h  |  2 +-
+ include/openssl/dh.h    |  6 +++---
+ include/openssl/dherr.h |  3 ++-
+ 7 files changed, 33 insertions(+), 6 deletions(-)
+
+diff --git a/crypto/dh/dh_check.c b/crypto/dh/dh_check.c
+index 7ba2bea..e20eb62 100644
+--- a/crypto/dh/dh_check.c
++++ b/crypto/dh/dh_check.c
+@@ -249,6 +249,18 @@ int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key)
+  */
+ int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *ret)
+ {
++    /* Don't do any checks at all with an excessively large modulus */
++    if (BN_num_bits(dh->params.p) > OPENSSL_DH_CHECK_MAX_MODULUS_BITS) {
++        ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE);
++        *ret = DH_MODULUS_TOO_LARGE | DH_CHECK_PUBKEY_INVALID;
++        return 0;
++    }
++
++    if (dh->params.q != NULL && BN_ucmp(dh->params.p, dh->params.q) < 0) {
++        *ret |= DH_CHECK_INVALID_Q_VALUE | DH_CHECK_PUBKEY_INVALID;
++        return 1;
++    }
++
+     return ossl_ffc_validate_public_key(&dh->params, pub_key, ret);
+ }
+
+diff --git a/crypto/dh/dh_err.c b/crypto/dh/dh_err.c
+index 4152397..f76ac0d 100644
+--- a/crypto/dh/dh_err.c
++++ b/crypto/dh/dh_err.c
+@@ -1,6 +1,6 @@
+ /*
+  * Generated by util/mkerr.pl DO NOT EDIT
+- * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
++ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
+  *
+  * Licensed under the Apache License 2.0 (the "License").  You may not use
+  * this file except in compliance with the License.  You can obtain a copy
+@@ -54,6 +54,7 @@ static const ERR_STRING_DATA DH_str_reasons[] = {
+     {ERR_PACK(ERR_LIB_DH, 0, DH_R_PARAMETER_ENCODING_ERROR),
+     "parameter encoding error"},
+     {ERR_PACK(ERR_LIB_DH, 0, DH_R_PEER_KEY_ERROR), "peer key error"},
++    {ERR_PACK(ERR_LIB_DH, 0, DH_R_Q_TOO_LARGE), "q too large"},
+     {ERR_PACK(ERR_LIB_DH, 0, DH_R_SHARED_INFO_ERROR), "shared info error"},
+     {ERR_PACK(ERR_LIB_DH, 0, DH_R_UNABLE_TO_CHECK_GENERATOR),
+     "unable to check generator"},
+diff --git a/crypto/dh/dh_key.c b/crypto/dh/dh_key.c
+index d84ea99..afc49f5 100644
+--- a/crypto/dh/dh_key.c
++++ b/crypto/dh/dh_key.c
+@@ -49,6 +49,12 @@ int ossl_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
+         goto err;
+     }
+
++    if (dh->params.q != NULL
++        && BN_num_bits(dh->params.q) > OPENSSL_DH_MAX_MODULUS_BITS) {
++        ERR_raise(ERR_LIB_DH, DH_R_Q_TOO_LARGE);
++        goto err;
++    }
++
+     if (BN_num_bits(dh->params.p) < DH_MIN_MODULUS_BITS) {
+         ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_SMALL);
+         return 0;
+@@ -267,6 +273,12 @@ static int generate_key(DH *dh)
+         return 0;
+     }
+
++    if (dh->params.q != NULL
++        && BN_num_bits(dh->params.q) > OPENSSL_DH_MAX_MODULUS_BITS) {
++        ERR_raise(ERR_LIB_DH, DH_R_Q_TOO_LARGE);
++        return 0;
++    }
++
+     if (BN_num_bits(dh->params.p) < DH_MIN_MODULUS_BITS) {
+         ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_SMALL);
+         return 0;
+diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt
+index e51504b..36de321 100644
+--- a/crypto/err/openssl.txt
++++ b/crypto/err/openssl.txt
+@@ -500,6 +500,7 @@ DH_R_NO_PARAMETERS_SET:107:no parameters set
+ DH_R_NO_PRIVATE_VALUE:100:no private value
+ DH_R_PARAMETER_ENCODING_ERROR:105:parameter encoding error
+ DH_R_PEER_KEY_ERROR:111:peer key error
++DH_R_Q_TOO_LARGE:130:q too large
+ DH_R_SHARED_INFO_ERROR:113:shared info error
+ DH_R_UNABLE_TO_CHECK_GENERATOR:121:unable to check generator
+ DSA_R_BAD_FFC_PARAMETERS:114:bad ffc parameters
+diff --git a/include/crypto/dherr.h b/include/crypto/dherr.h
+index bb24d13..519327f 100644
+--- a/include/crypto/dherr.h
++++ b/include/crypto/dherr.h
+@@ -1,6 +1,6 @@
+ /*
+  * Generated by util/mkerr.pl DO NOT EDIT
+- * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
++ * Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved.
+  *
+  * Licensed under the Apache License 2.0 (the "License").  You may not use
+  * this file except in compliance with the License.  You can obtain a copy
+diff --git a/include/openssl/dh.h b/include/openssl/dh.h
+index 6533260..50e0cf5 100644
+--- a/include/openssl/dh.h
++++ b/include/openssl/dh.h
+@@ -141,7 +141,7 @@ DECLARE_ASN1_ITEM(DHparams)
+ #   define DH_GENERATOR_3          3
+ #   define DH_GENERATOR_5          5
+
+-/* DH_check error codes */
++/* DH_check error codes, some of them shared with DH_check_pub_key */
+ /*
+  * NB: These values must align with the equivalently named macros in
+  * internal/ffc.h.
+@@ -151,10 +151,10 @@ DECLARE_ASN1_ITEM(DHparams)
+ #   define DH_UNABLE_TO_CHECK_GENERATOR    0x04
+ #   define DH_NOT_SUITABLE_GENERATOR       0x08
+ #   define DH_CHECK_Q_NOT_PRIME            0x10
+-#   define DH_CHECK_INVALID_Q_VALUE        0x20
++#   define DH_CHECK_INVALID_Q_VALUE        0x20 /* +DH_check_pub_key */
+ #   define DH_CHECK_INVALID_J_VALUE        0x40
+ #   define DH_MODULUS_TOO_SMALL            0x80
+-#   define DH_MODULUS_TOO_LARGE            0x100
++#   define DH_MODULUS_TOO_LARGE            0x100 /* +DH_check_pub_key */
+
+ /* DH_check_pub_key error codes */
+ #   define DH_CHECK_PUBKEY_TOO_SMALL       0x01
+diff --git a/include/openssl/dherr.h b/include/openssl/dherr.h
+index 5d2a762..074a701 100644
+--- a/include/openssl/dherr.h
++++ b/include/openssl/dherr.h
+@@ -1,6 +1,6 @@
+ /*
+  * Generated by util/mkerr.pl DO NOT EDIT
+- * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
++ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
+  *
+  * Licensed under the Apache License 2.0 (the "License").  You may not use
+  * this file except in compliance with the License.  You can obtain a copy
+@@ -50,6 +50,7 @@
+ #  define DH_R_NO_PRIVATE_VALUE                            100
+ #  define DH_R_PARAMETER_ENCODING_ERROR                    105
+ #  define DH_R_PEER_KEY_ERROR                              111
++#  define DH_R_Q_TOO_LARGE                                 130
+ #  define DH_R_SHARED_INFO_ERROR                           113
+ #  define DH_R_UNABLE_TO_CHECK_GENERATOR                   121
+
+--
+2.40.1
diff --git a/meta/recipes-connectivity/openssl/openssl_3.0.12.bb b/meta/recipes-connectivity/openssl/openssl_3.0.12.bb
index d8c9b073a2..395cace2ec 100644
--- a/meta/recipes-connectivity/openssl/openssl_3.0.12.bb
+++ b/meta/recipes-connectivity/openssl/openssl_3.0.12.bb
@@ -12,6 +12,7 @@ SRC_URI = "http://www.openssl.org/source/openssl-${PV}.tar.gz \
            file://0001-buildinfo-strip-sysroot-and-debug-prefix-map-from-co.patch \
            file://afalg.patch \
            file://0001-Configure-do-not-tweak-mips-cflags.patch \
+           file://CVE-2023-5678.patch \
            "
 
 SRC_URI:append:class-nativesdk = " \